SYNOPSIS
       #include <string.h>

       size_t strlen(const char *s);

DESCRIPTION
       The  strlen()  function  calculates  the  length  of  the string s, not
       including the terminating '\0' character.

RETURN VALUE
       The strlen() function returns the number of characters in s.

CONFORMING TO
       SVr4, 4.3BSD, C89, C99.

SEE ALSO
       string(3), wcslen(3), wcsnlen(3)

COLOPHON
       This page is part of release 3.23 of the Linux  man-pages  project.   A
       description  of  the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.